Help please

Find the largest whole number to equal the length of the triangle

Write the point-slope form of an equation of the line through the points (-2, -3) and (-7, 4).

16x^2-16x=5 solve the equation by completing the square

Mallory has been offers two different jobs. she can baby sit for 6 hours a week and get $8.50 an hour. or she can work at the library for 14 hours a week and make $5.50 an hour. which job will allow her to save the most money after 6weeks?