Answer:
$130
Step-by-step explanation:
If Nathan already has $90 then you would add the amount of money collected after the 4 weeks. In each week he makes $10.
The equation would be $90+($10x4)= $X
Answer:

first create a bracket:

then solve the first bracket:

then open the remaining bracket:

carryout the subtraction operation:

Divide 296 by 16 you get 18.5 then add the 5.75 to get 24.25
So the answer is 24.25
Answer:
b. 8.7
Step-by-step explanation:
7 rounds up turning the 6 besides it into a 7.