Volunteers at Sam's school use some of the student council's savings for a special project. They buy 7
backpacks for $6 each and fill each backpack with paper and pens that cost $3. By how much did the
student council's savings change because of this project?

7 backpacks for $8 = $56

7 lots of paper and pens for $5 each = $35

56 + 35 = $91

The student Council savings decreased by $91

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.