The answer below (I need 20 characters to respond so just ignore the words between the parenthesis on this response)
Answer:
D
Step-by-step explanation:
If you multiply 3 and 7 you are saying she worked 21 hours when she only worked a total of 10 hours.
Answer:
9 less can be written as -9
Answer:
x+9
Step-by-step explanation:
f(x) = x, going up 9
that is y=x, going up 9
if you wnat to go up, subtract 9 from y
y -9 = x
y=x+9
convert back to f(x)
f(x) = x+9
√z = 13 - 8
√z = 5
z = 5²
z = 25
In this case the z can be any number, however z cannot be less than 0 and that is the restriction. (for example; √-1 = irrational number, cannot be solved.)
