He figure shows two parallel lines ab and cd cut by transversals ef and gh. angle ekd measures 90 degrees.

ab is parallel to cd. ef and gh are transversals that cut cd at the same point. the angle between the transversals at the point where they meet cd is 40 degrees. gh makes an angle x with ab. ef is perpendicular to ab and cd.

what is the measure of angle x?

What is always true about a positive integer raised to a negative odd power?

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?