Between the time Iko woke up and lunchtime, the temperature rose by 11°. Then by the time he went to bed, the temperature dropped by 14 °.
Write an addition expression for the temperature relative to when Iko woke up.

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

What is the frequency of the sinusoidal graph?

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?