Equations and inequalities what is 2y - 1.7 = 68.3

"Solve the equation for y. Show how you determined your answer.

2y - 1.7 = 68.3"

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.

What is r i 4.5+10r=-6.5 with work pls