Four times the difference of x and one is greater than or equal to twice the sum of x and three

Evaluate the expression for the given value of the variable 7a - 4a for a =8

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

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq