Expand. Your answer should be a polynomial in standard form. (-r^2+3r-7)(r^2-7)

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?