Compute the range and sample standard deviation for strength of the concrete (in psi) 3950, 4130, 3300, 3000, 2970, 3810, 4130, 4040

If square root x = -7, then x= -49 true or false

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1

Aculinary club earns $1360 from a dinner service. they sold 45 adult meals and 80 student meals. an adult meal costs twice as much as a student meal. what is the cost of an adult meal?