Brittany saved $30 each much in a jar of 3 1/2 years. she spent 50% of the savings on a flat screen television. how much money did brittany have left in the jar?

Which expression is equivalent to 2x^2+7x+4?

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

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