Should be option 1. i cant really gv an explanation tho sry :/
Answer:
Step-by-step explanation:
9h+5h(5h-5760)-2+12=y
Answer:
The equation is given by:

Step-by-step explanation:
During last years's charity walk, she raised $45.50.
During this years walk, she raised n, which is 7/10 of this amount. So, the equation is given by:

Answer:
The word "of" refers to multiplication.
Step-by-step explanation:
Multiplication is what to do in all word problems when we see the word "of"
10 to the 5th power means 5 times zero, place 8 before that and it will be 800000 then multiply with 0.5 it will be 400000. In scientific notation it will be like 4x10 the 5th power.