A Karen purchased a prepaid phone card for $20.50. Calls cost 9 cents a minute using this card. The credit, C (in dollars), left on the card after it is used for
x minutes of calls is given by the following.
C=20.50 -0.09x
How much credit is left on the card after Karen uses it for 30 minutes of calls?

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality

Given: ab ≅ bc and ao ≅ oc ok − angle bisector of ∠boc find: m∠aok