Rhonda drove 51 miles per hour for 5 hours. She then drove 55 miles per hour for x hours. Which expression is equivalent to the total distance Rhonda drove? [
51
(
5
)
−
55
x
]
[ 51 ( 5 ) − 55 x ]

[
51
(
5
)
+
55
x
]
[ 51 ( 5 ) + 55 x ]

[
(
51
+
5
)
(
55
+
x
)
]
[ ( 51 + 5 ) ( 55 + x ) ]

[
(
51
+
55
2
)
(
5
+
x
)
]

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

The width of a rectangle is half as long as the length. the rectangle has an area of 18 square feet. what are the length and width of the rectangle?