3. What is the sum of 2x, x, and 3x?
a. 5x
b. 6x
c. 5x³
d. 6x³
4. what must be added to 9x + 1 to get 2x –3x?
a. —7x – 4
b. 7x – 2
c. 11x – 2
d. —11x -4
5. simplify: (25x³y²)^0
a. 0
b. 1
c. 25
d. 25xy
6. which is NOT true?
a. —y means -1y
b. —y² means (-y)(-y)
c. —yz means -1 (y+2)
d. —(y + 2) means -1 (y + 2)
7. in simplified form 5^0 + 1 is equal to ___.
a. 0
b. 1
c. 2
d. 6
8. write 2·2·2·x·x·x·y·y·y using exponent.
a. 2³x³y³
b. -2³x³y³
c. 3²x³y³
d. 3²3×3^y
9. what law of exponent when multiplying like bases keep the same base and add the exponent?
a. power of power
b. product rule
c. quotient rule
d. negative exponent
10. subtract 13a from 20a.
a. —7a
b. 7a
c. —33a
d. 33a ​