Juan spent 10 minutes on his history homework and 3 minutes per question on his math homework. which graph shows the total homework time, t, related to the number of math questions, q?

Graph attached below.

Step-by-step explanation:

 Given : Juan spent 10 minutes on his history homework and 3 minutes per question on his math homework

We have to plot the graph that shows the total homework time, t, related to the number of math questions, q.

Since, t denotes  the total homework time taken by Juan

and q denotes the number of math questions done by Juan

Then we can represent the situation using a linear equation.

Since he spent 10 minutes on his history homework and 3 minutes per question on his math homework.

Then q questions take 3q time

and 10 minutes are fixed so,

Total time is given by equation

t = 10 + 3q

And graph for the equation is attached below.

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18