Evaluate 5x²-4 when x = 3

Tamara bought yarn for $39 and 2 pairs of knitting needles. Her total cost for the yarn and knitting needles was $69. Tamara writes an equation that represents the cost of each pair of knitting needles.

What is the measure of an exterior angle of a 18 sided polygon

Round 63849 to the nearest ten, nearest hundred, to the nearest thousand and ten thousand

15 more than half a number equal 9

What is 6% of 50?

Is the mean height for all adult American males between the ages of 18 and 21 now over 6 feet? Let μ represent the population mean height of all adult American males between the ages of 18 and 21.

63 as a fraction in simplest form.

The sum of four times a number and eight is 24 find the number

A builder buys 16.1 acres of land to develop a new set of walking trails and baseball fields. The builder plans to use 0.25 of the land for baseball fields. How many acres will the builder use for the baseball fields?

Which of the following options best describes the function graphed below? A graph shows a slanting straight line that starts at the origin and goes up.