Answer:
x=12
Step-by-step explanation:
Let y equal number of pushups a day. When x = 1, y = 8. When x = 2, y = 10. 10 is a factor of 30. Multiply y by 3. However, since x increases by 1 when y increases by 2, multiply x by 6 (2*3). That equals 12. Therefore, when x = 12, y = 30.
80
180-(60+40)=180-60-40=180-100=80
50 mins
hope this helped :)
4,3
Replace x with 2:
f(x) = 3x -12:
f(2) = 3(2) - 12
= 6 - 12
= -6
