The table represents the multiplication of two binomials.

a geometric model with 2 columns and 2 rows. the first column is labeled 3 x with entries a, c. the second column is labeled 5 with entries b, 10. the first row is labeled negative x with entries a, b. the second row is labeled 2 with entries c, 10.
what is the value of a?

negative 3 x
negative 3 x squared
negative 5 x
negative 5 x squared

The table above shows approximate conversions from gallons to liters. what is the value of x?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.