What is the first step in evaluating this expression? 15 + 20 ÷ (10 – 7) + 12

a
Subtract 7 from 10.
b
Divide 20 by 10.
c
Add 15 and 20.
d
Add 7 and 12.

Which graph represents the solution set for the given system of inequalities? x+2y< 3 x+y> 4 3x-2y> 4

You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?