Solve using the quadratic formula. show your work. 4x^2+13x=12

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.

Given: △acm, m∠c=90°, cp ⊥ am , ac: cm=3: 4, mp-ap=1. find am.