Question

Directions: Solve the problems below. Make sure to show your work when applicable.

Simplify the expression.
22+(3^2-4^2)
Simplify the expression.
√625

Evaluate the expression for a = –1 and b = 5.
5a – 7

Evaluate the expression for a = –1 and b = 5.
(ab)2

Simplify the expression.
9xy2 – 11xy2

Simplify the expression.
-3(b – 7)

Solve the equation. Check your answer.
m/20 = 5/4

Solve the equation. Check your answer.
4y + 5 = – 31

Solve the equation. Check your answer.
3x – 7 = 5x + 19

Answer 1

There isnt a b for the 3seond question

Answer 2

Simplify the expression. -3(b – 7)
Distribute and get
21-3b

Answer 3

I know but that's the exact question...

Answer 4

Solve the equation. Check your answer. m/20 = 5/4
Cross multiply
4*20 and 5*m
80/5m
divide and get
m=16

Answer 5

Solve the equation. Check your answer. 4y + 5 = – 31
subtract 5 on both sides

4y=-36 then divide by 4

y=-9

Answer 6

Solve the equation. Check your answer. 3x – 7 = 5x + 19

start by finding like terms

3x-5=-2
-2x-7=19
+7 +7
-2x=26
divide
x=-13

Answer 7

Evaluate the expression for a = –1 and b = 5. (ab)2
put the numbers into the equation

(ab)^2,
(-1*5)^2,
(-5)^2,
(-5)(-5),
25.

Answer 8

Simplify the expression. 9xy2 – 11xy2

9xy² - 11xy² = -2xy²

Answer 9

Simplify the expression. 22+(3^2-4^2)

start within the parentheses

22+( 9-16)
22+(-7)
add and get
15

Answer 10

Simplify the expression. √625

all you do is put this in a calc and thats it so you can do this

Answer 11

I think thats all :D