Ms. Clark spent $89.85 on sewing kits that cost $5 each plus $4.85 tax on the total bill. Write an equation.​

Can somebody me out with this question

Asequence is defined recursively by the formula  f(n  +  1)  =  f(n)  +  3 . the first term of the sequence is  –4. what is the next term in the sequence? –7–117

Write the rational number in lowest terms 99/-15