Answer:

Step-by-step explanation:
We are given the following in the question:
Keith has $100 in a savings account at the beginning of the summer.
Let x be the number of weeks he works.
He makes $25 each week at his babysitting job.
He wants to earn more than $350 dollars during summer.
Total money earned by job = 
His total money in account should be more than 350$.
We can write this with the help of inequality:

The following inequality represents the given situation.
Answer:
379.94
Step-by-step explanation:
11 squared is 122
Times 3.14 is 379.94
Answer:
7 sqrt(2)
Step-by-step explanation:
We can use trig functions
sin theta = opposite side/ hypotenuse
sin 45 = 7/x
Multiply each side by x
x sin 45 = 7
Divide each side by sin 45
x = 7 / sin 45
x = 7 (sqrt(2) /2)
x = 14 / sqrt(2)
We do not leave square roots in the denominator
x = 14 / sqrt(2) * sqrt(2)/ sqrt(2)
12 sqrt(2)/ 2
= 7 sqrt(2)
-2 1/4, -1 1/4, 3/4, |1 1/4|, |-1 3/4|, |-2 1/4|