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a local charity sponsors a 5k race to raise money. it receives $55 per race entry and $10,000 in donations, but it must spend $15 per race entry to cover the cost of the race. write and solve an inequality to determine the number of race entries the charity needs to raise at least $55,000. r = race entry
my equation: 55r + 10,000 - 15r ≥ 55,000
my r ≥ 1,125
is this correct?

Find the x-intercept and y-intercept of the line. 3x + 5y = −15

Solve the system by the elimination method. x + y - 6 = 0 x - y - 8 = 0 when you eliminate y , what is the resulting equation? 2x = -14 2x = 14 -2x = 14

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.