It could be? the 7 could be 7 to literally any number soooo
10
sum is add
cube is to the 3rd powr
19+x³
11.
product means multiply
3 times y is no more than (equal to or less than ) 21
3y≤21
no need to solve
12. 2 times difference is 10
difference is subtract
2(z-12)=10
Answer:
a=8, b=0 and c=-6
Step-by-step explanation:
see pic for expln
If 
is a factor of a polynomial 
then, 
is its root.
So 
is a root of 
Answer:
58.18
Step-by-step explanation:
640/11
