Evaluate 3x^3 +2x^2-2x+6 at x=4

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

Lucy and donavan measured the length of the school garden. lucys measurement is 11.3m and donavans measurement is 113 cm. could both be correct? explain