40 points please help Tyrone's age is 2 years less than 4 times his younger sister's age. If his younger sister's age is b years, which of the following expressions best shows Tyrone's age?

4b
b − 2
2b − 4
4b − 2
Question 2(Multiple Choice Worth 4 points)
(07.02)

Christina bought a purse for $29.95 and x belts for $3.99 each. Which of the following expressions shows the total amount of money she spent?

29.95x + 3.99
29.95x + 3.99x
29.95 + 3.99 + x
29.95 + 3.99x
Question 3(Multiple Choice Worth 4 points)
(07.02)

Diana buys 5 sodas every week. Which of the following expressions shows the total number of sodas she buys in y weeks?

5y
Fraction y over 5
5 + y
5 + 5y
Question 4(Multiple Choice Worth 4 points)
(07.02)

Chris is using the expression 4x + 2 to represent the number of students in his gym class. There are four times as many students as basketballs, and there are two more students in the locker room. What does x represent?

The number of students and basketballs.
The number of students in the gym.
The number of students.
The number of basketballs.
Question 5(Multiple Choice Worth 4 points)
(07.02)

Which of the following expressions represents the value, in dollars, of a certain number of nickels, n, and dimes, d?

0.15nd
0.15n + d
0.10n + 0.05d
0.05n + 0.10d