Please help me with this .

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

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels