Please help lost on the question

Match each equation with the operation you can use to solve for the variable. subtract 10. divide by 10. divide by 5. subtract 18. multiply by 10. add 18. add 10. multiply by 5. 5 = 10p arrowright p + 10 = 18 arrowright p + 18 = 5 arrowright 5p = 10 arrowright

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Aline has a slope of and a y-intercept of –2. what is the x-intercept of the line?