plz i am giving away 20

1.

what is the value of 14 – a2 given a = –3?
a. 23
b. 11
c. 8
d. 5

2.

which equation represents “fifteen more than r is sixty-one? ”
a. r + 61 = 15
b. r + 15 = 61
c. r – 15 = 61
d. r – 61 = 15

3.

what is the value of 42 – 2(3 • 5 + 1)?
a. 8
b. 1
c. –16
d. –21

Select 2 statements that are true about the equation y+6=-10(x-3).1) the slope of the line is -102) the slope of the line is 33) one point on the line is (3,6)4) one point on the line is (3,-6)

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2