1. what is the value of y?
6(5 + 3) = 6 • 5 + 6 • y
y = ?
choose all answers that are correct.
2.
which expressions show how 8 • 54 can be rewritten using the distributive property?
choose all answers that are correct.
a.
8 • 50 + 4
b.
8 • 50 + 8 • 4
c.
8 • 60 – 8 • 6
d.
8 • 60 + 8 • 4
3. simplify: 3u + 7v + 4u – 2v
a.
7u + 5v
b.
7u + 9v
c.
10u – 2v
d.
12uv
4. which are the like terms in 4x3 – 7x2 + x + x3?
a.
4x3, –7x2, and x3
b.
4x3and x
c.
4x3and x3
d.
they are all like terms.
5. simplify:
5x3 – 2x2 + x + 4x3
a.
8x3
b.
9x6– 2x2+ x
c.
9x3– 2x2+ x
d.
5x3– 2x2+ x + 4x3 (the expression cannot be simplified)

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

At river bank, checking account customers earn 0.75% interest a month on their account balances, pay no service fees for writing checks, and pay a monthly $2.00 financial charge. calculate the income earned in one month on the checking account for a customer with an account balance of $1,000. a. $4.25 b. $5.50 c. $6.75 d. $7.25 checking account earnings at baker’s bank are expressed by the equation: i = -0.09x + 10.2. while the earnings at elite bank are modeled by: i = -0.02x + 7.5. in both cases, x is the number of checks written. at what number of checks will elite bank start generating more checking account income than baker's bank? a. 12 b. 25 c. 39 d. 42 emilio’s checking account had a balance of 728.32 at the beginning of the week. he wrote checks for the following amounts throughout the week: $99.48, $33.50, $18.23, and $72.05. he also deposited his paycheck in the amount of $1,109.90. what is his account balance at the end of the week? a. $1,192.35 b. $1,222.86 c. $1,540.52 d. $1,614.96

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.