Ineed

1) solve, using the substitution method.

d + e = 2
d – e = 4

a) the solution is (3, –1).

b) there are an infinite number of solutions.

c) there is no solution.

d) the solution is (5, 1).

2) solve, using the substitution method.

4x + 2y = 11

x – 2 = –2y

a) (3, -1/2)
b) (0, - 2)
c) (0, -11/2)
d) (7, -5/2)

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point