7th grade math help me plzzz

y = 3x - 4 (the choice in the top right box)

Step-by-step explanation:

Top left choice:

Try (7, 17) with y = 2x - 1

y = 2(7) - 1

y = 14 - 1

y = 13

You have (7, 17), so you'd need y = 17, but since y = 13, the equation

y = 2x - 1 is not it.

Top right choice:

Try (7, 17) with y = 3x - 4

y = 3(7) - 4

y = 21 - 4

y = 17

You have (7, 17), and you need y = 17. Here, you did get y = 17, so this equation may be it. We need to try the other given ordered pairs with this equation.

Try (5, 11) with y = 3x - 4

y = 3(5) - 4

y = 15 - 4

y = 11

(5, 11) works.

Try (3, 5) with y = 3x - 4

y = 3(3) - 4

y = 9 - 4

y = 5

(3, 5) works.

Try (2, 2) with y = 3x - 4

y = 3(2) - 4

y = 6 - 4

y = 2

(2, 2) works.

All given points work with y = 3x  4.

y = 3x - 4 (the choice in the top right box)

the difference between a number and 5 is -2.

step-by-step explanation:

notice that the equation you are given has -2 (negative 2) on the right side, not 2. when you subtract 5 from a number n, you are finding the difference between the number and 5.

the difference between a number and 5 is -2.

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls