Simplify the expression. (2+i) (6+8i)

Evaluate f (x) = 4•5 for x=1

In a science experiment the temperature of a substance is changed from 42 °F to - 54 °F at an average rate of - 12 degrees per hour. Over how many hours does the change take place? The answer is 8 hours I need the work for it though.

Bob's video venue has a membership fee of $5.00 and tape rentals are $1.50 each. video heaven has no membership fee and tape rentals are $2.00 each. how many tapes must be rented in order for bob's video venue to be more economical?

Many fans have never been to the stadium and only listen to games on the radio. The graph shows the number of fans that only listen to the game on the radio vs the distance in miles the fans live from the stadium.

Which number rounds down when rounded to the nearest hundredth? a. 46.215 b. 54.384 c. 57.456 d. 61.307

Mikey bought some buttons at the craft store she is five of them for an art project he had 54 left which equation wins softwoods how you how many buttons b, mikey bought.

What is greater, 5/7 or 4/6?

Determine the value of a4 - a2.

Define x andy as symbolic variables and create the two symbolic expressions $$S = x + / sqrt { x } y ^ { 2 } + y ^ { 4 }$ and T = / sqrt {x} - y ^ { 2 }T = x-y 2 $Use symbolic operations to determine the simplest form of S / cdot⋅ T.

Factor the expression completely 8x^2-18