Mr. garcia has 15 boys and 10 girls in his math class. he selects two students at random to demonstrate how they solved the day’s challenge assignment. what is the probability that both students are girls?

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?

X+ 4y − z = −14 5x + 6y + 3z = 4 −2x + 7y + 2z = −17

Aarti posted a comment on her blog. each day the number of responses to her comment was 125% of the number she received on the previous day. if there were 64 responses the first day, how many were there on the fourth day?