I have SAT's tomorrow and need help with math... Antonina needs to have worked at least 90 volunteer hours to graduate. She has already volunteered with a housing organization over the summer for 52 hours. Antonina needs to tutor after school for 3 hours per week to complete the remainder of her volunteer hours. If w is the number of weeks that Antonina needs to tutor in order to complete her volunteer hours, which of the following inequalities best models the situation described above?

Answers

Answer 1

Answer:

Answer:

3w + 52 ≥ 90

Step-by-step explanation:

If she volunteers 3 hours per week for w weeks, then the number of hours from tutoring is 3w. Add the 52 hours from her summer volunteering, and her total hours is 3w + 52. This needs to be at least 90 hours for her to graduate, so:

3w + 52 ≥ 90

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the fee for the parking garage at the airport is $16 for the first day plus $4.50 for each additional day. which equation represents the fee, f, for leaving your car at the airport for d days, where d is the number of days beyond the first day? a. f = 4.5d 16 b. d = 16f 4.5 c. f = 16d 4.5 d. d = 4.5d 16

Answers

It will be a. f=4.5d+16. Unlike the other equations. F represents the fee for the parking garage, and d represents the number of days.

Gaby has a total of 36 coins in her piggy bank. If the only coins in the bank are nickels and quarters, and add upto $6, how many of each coin are in her piggy bank?

Answers

Answer:

21 quarters = 5.25

15 nickel. = .75

Step-by-step explanation:

21 + 15 = 36

5.25 + .75 = 6.00

Answer:

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Step-by-step explanation:

? M/S = 7.2 km/h ------ PLEASE HELP

Answers

To go from km/h to M/S you have to multiply by 3,6 so this must be the answer:
7,2 km/h x 3,6 = 25,92 M/S

Can anyone help?? Please

Answers

3O=12/3 Divide both sides by 3.
/3

O=4

♢+2=5(4)
♢+2=20
-2 -2 Subtract 2

♢=18

2(4)+18=2∆
8+18=2∆
26=2∆
/2 /2 Divide by 2

∆=13

The circle is worth 4 because it's being multiplied by 3. Then the diamond is 18 and the triangle is -5.

Your video membership cost $14 per month for 10 video rentals. Each additional video rental is $2. Write in equation into variables that represent the cost of your video rentals.

Answers

Answer:the equation that represents the cost of your video rentals is y = 14 + 2(x - 10)

Step-by-step explanation:

Let x represent the number of video rentals that you made in a month.

Let y represent the total cost of x video rentals that you make in a month.

Your video membership cost $14 per month for 10 video rentals. Each additional video rental is $2. Therefore, the equation that represents the cost of your video rentals would be

y = 14 + 2(x - 10)

Where x - 10 is representing additional video rental above 10

Write an equation that is perpendicular to the line y = 2x + 13?

Answers

An equation can't be perpendicular to a line, but the graph of the equation can.

When that happens, we recall that the slopes of perpendicular lines are negative reciprocals.

One line is the graph of [ y = 2x + 13 ]. The slope of the line is 2 .
So the slope of a line perpendicular to it must be -1/2 .

The equation of a line perpendicular to it is: y = (-1/2 x) plus (any number).

The y-intercept of the perpendicular line doesn't matter. Only its slope does.

$k:\ y=m_1x+b_1\ \ \ and\ \ \ l:\ y=m_2x+b_2\n\nk\perp l\ \ \ \Leftrightarrow\ \ \ m_1\cdot m_2=-1\n------------------------\n\nk:\ y=2x+13\ \ \ \ and\ \ \ \ l:\ y=m_2x+b_2\n\n2\cdot m_2=-1\ \ \ \Leftrightarrow\ \ \ m_2=- (1)/(2) \n\nl:\ y=- (1)/(2) x+b_2\ \ \ and\ \ \ b_2\ \in\ R\n\nfor\ example:\n\ny=- (1)/(2) x,\ \ \ y=- (1)/(2) x+5 (1)/(7) ,\ \ \ y=- (1)/(2)x - √(13)\ ,\ ...$

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