Answer:
Step-by-step explanation:
Add 
and 
on both sides.
Add or subtract like terms.
Divide 
on both sides.
is the independent variable now.
Answer: s(s+4)=7, 7 shelves
Step-by-step explanation:
I think it's easiest to find these type of answers by finding the common factors of a number. First 77, they are 1×77 & 7×11.so you can have 11 rocks on 7 shelves or 7 rocks on 11 shelves. The question states the number or rocks on the shelf is more than the number of shelves, so you must have 11 rocks on 7 shelves. You know you have 77 rocks, so the equation must equal 77. I plugged 7 in for s in the equations to determine the correct answer. 7(7+4)=77.
Answer:
a. x divided by 3
Step-by-step explanation:
because if Tyler has 3 times more books than Mai, then Mai has 3 times fewer books than Tyler.
Answer: 14
Step-by-step explanation:
