Devin paid $30 to be a member of the fox lake gym. when he takes the boxing class, it costs him $2. jared is not a member of the gym, and it costs him $5 for the same class. how many classes would it take for devin's total cost to equal jared's total cost?

For this case, the first thing we must do is define variables.

We have then:

x: number of classes:

y: total cost

For Devin we have the following equation:

For Jared we have:

Then, by the time the cost of both is the same, we have:

From here, we clear the value of x.

We have then:

it takes 10 classes for Devin's total cost to equal Jared's total cost

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.